PAC Racing 400 Series Valve Spring Retainers PAC-R450-16

Name: PAC Racing 400 Series Valve Spring Retainers
Brand: PAC Racing Springs
SKU: RSC-PAC-R450-16
Price: 291.99 USD
Availability: InStock
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Part Number: RSC-PAC-R450-16

$291.99

PAC Racing 400 Series Valve Spring Retainers

Dual Spring 400 Series Retainer - Retainer for RPM Series Dual Valve Springs (mini 8 Locks). Lock angle: min
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PAC Racing 400 Series Valve Spring Retainers PAC-R450-16

RSC-PAC-R450-16

Not Yet Reviewed

Part Number: RSC-PAC-R450-16

Estimated Ship Date from Texas: Monday 10/19/2026

$291.99

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Overview

Applications

Q&A

Estimated Ship Date from Texas: Monday 10/19/2026 Would you rather pick it up?

Overview

Brand:

PAC Racing Springs

Manufacturer's Part Number:

PAC-R450-16

Part Type:

Valve Spring Retainers

Product Line:

PAC Racing 400 Series Valve Spring Retainers

Summit Racing Part Number:

RSC-PAC-R450-16

Outside Diameter of Outer Spring (in.):

1.240 in.

Retainer Material:

Titanium

Lock Style:

8 degree

Valve Spring Style:

Standard

Retainer Style:

Standard

Number of Springs Per Valve:

Dual

Outside Diameter of Middle Spring (in.):

0.940 in.

Inside Diameter of Inner Spring (in.):

0.685 in.

Locks Included:

Quantity:

Sold as a set of 16.

Notes:

For use with Pac Racing LS RPM series valve springs.

PAC Racing 400 Series Valve Spring Retainers

PAC Racing 400 Series valve spring retainers are made from the very best American Titanium 6AL4V material available to bring you great strength with less weight. In order to have uniform material, PAC Racing buys mil run lots so they can define the tensile strength and seam characteristics. This version of titanium is widely used in the Aerospace industry, allowing for lower material costs compared to their 500 Series. These 400 Series retainers are robust, lightweight powerhouses able to tackle most street and off-road builds. The last thing anyone wants is a cheap part to ruin your day. For strength, uniformity, and reliability, you need to use PAC Racing 400 Series valve spring retainers.

Applications